Load control module that permits testing of power switching devices that are part of the load control module

ABSTRACT

Some embodiments relate to a load control module that includes an enclosure and a plurality of power switching devices within the enclosure. The load control module further includes an interface mounted on an exterior of the enclosure and a switch connected to the interface. The switch is connected to the interface such that the switch selectively activates the interface to permit testing of the power switching devices upon operation of the interface. In some embodiments, the load control module may include a display that provides information relating to whether the interface is activated by the switch. Other embodiments relate to a load control module that includes a generator having a controller which controls operation of the generator and provides commands to the switch to selectively activate the interface to permit testing of the power switching device upon operation of the interface.

TECHNICAL FIELD

Embodiments pertain to a load control module, and more particularly to a load control module that permits testing of power switching devices that are part of the load control module.

BACKGROUND

Most conventional load control modules include a test button that permits power switching devices (e.g., relays) located within the load control module to be exercised (i.e., functionally operated) upon operation of the push button.

One of the drawbacks with existing load control modules is such test buttons are located within an enclosure that houses the power switching devices. Since the test button is positioned inside the enclosure, the enclosure must be opened in order to operate the push button.

The need to open the enclosure is undesirable because a potentially unskilled user may be exposed to dangerously high voltage. In addition, a tool is commonly required in order to open the enclosure and expose the push button.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic plan view of an example load control module.

FIG. 2 is a schematic plan view of an example power management system that includes the load control module shown in FIG. 1.

FIG. 3 is a schematic section plan view of another example power management system.

DETAILED DESCRIPTION

The following description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.

FIG. 1 is a schematic plan view of an example load control module 20. The load control module 20 includes an enclosure 30 and a plurality of power switching devices 40 within the enclosure 30. The load control module 20 further includes an interface 50 mounted on an exterior of the enclosure 30 and a switch 60 connected to the interface 50. The switch 60 is connected to the interface 50 such that the switch 60 selectively activates the interface 50 to permit testing of the power switching devices 40 upon operation of the interface 50.

In the example embodiment illustrated in FIGS. 1-3, the interface 50 includes a push button. In other embodiments, the interface 50 may be a touch screen. The type of interface 50 that is included in the load control module 20 will depend in part on (i) the environment where the load control module 20 is to be located; and/or (ii) the type of power switching devices 40 that are included in the enclosure (among other factors).

In some embodiments, each of the power switching devices 40 is a relay, although it is contemplated that that other types of power switching devices may be utilized in the load control module 20. It should be noted that the switch 60 may selectively activate the interface 50 to permit sequential testing of each relay 40 upon operation of the interface 50.

In the example embodiment that is illustrated in FIG. 2, the load control module 20 further includes a display 90 that provides information relating to whether the interface 50 is activated by the switch 60. As an example, the display 90 may be positioned near the interface 50 to provide information to the operator of the interface 50 relating to whether the power switching may be tested at a particular point in time by operating the interface 50.

FIG. 2 is a schematic plan view of an example power management system 10 that includes the load control module 20 shown in FIG. 1. The power management system 10 further includes a generator 70 that includes a controller 80 which controls operation of the generator 70 and provides commands to the switch 60 to selectively activate the interface 50 to permit testing of the power switching device 40 upon operation of the interface 50.

It should be noted the commands for the switch to selectively activate the interface 50 to permit testing of the power switching device 40 may be in other locations besides the generator control 80. As an example, a switch control 100 may be located within the enclosure 30.

During operation of some embodiments of the power management system 10, the generator may need to be in a “run” condition in order for any of the controls described herein to generate commands relating to selective switch activation. As an example, the switch 60 may be activated in order to permit a qualified user to test (i.e., exercise) the power switching devices 40 without opening the enclosure 30 by using the interface 50 on the outside of the enclosure 30.

In the example embodiment that is illustrated in FIGS. 2 and 3, the power management system 10 further includes a display 90 that provides information relating to whether the interface 50 is activated by the switch 60. FIG. 2 shows an example embodiment where the display 90 is positioned near the interface 50. FIG. 3 shows an example embodiment where the display 90 is positioned near the controller 80 near the generator 70.

The example load control modules 20 and power management systems 10 described herein may serve to prevent a potentially unskilled user from being exposed to dangerously high voltage when power switching devices 40 within an enclosure 30 need to be tested.

The Abstract is provided to comply with 37 C.F.R. Section 1.72(b) requiring an abstract that will allow the reader to ascertain the nature and gist of the technical disclosure. It is submitted with the understanding that it will not be used to limit or interpret the scope or meaning of the claims. The following claims are hereby incorporated into the detailed description, with each claim standing on its own as a separate embodiment. 

What is claimed is:
 1. A load control module comprising: an enclosure; a power switching device within the enclosure; an interface mounted on an exterior of the enclosure; a switch connected to the interface such that the switch selectively activates the interface to permit testing of the power switching device upon operation of the interface.
 2. The load control module of claim 1, wherein the interface includes a push button such that operation of the push button permits testing of the power switching device when the switch selectively activates the push button.
 3. The load control module of claim 1, wherein the interface includes a touch screen such that operation of the touch screen permits testing of the power switching device when the switch selectively activates the touch screen.
 4. The load control module of claim 1, further comprising a display that provides information relating to whether the interface is activated by the switch.
 5. The load control module of claim 1, wherein the display is positioned near the interface.
 6. The load control module of claim 1, wherein the power switching device is a relay.
 7. The load control module of claim 1, further comprising a plurality of power switching devices within the enclosure, wherein the switch is connected to the interface such that the switch selectively activates the interface to permit testing of the plurality of power switching devices upon operation of the interface.
 8. The load control module of claim 7, wherein the switch selectively activates the interface to permit sequential testing each power switching device upon operation of the interface.
 9. A power management system comprising: an enclosure; a power switching device within the enclosure; an interface mounted on an exterior of the enclosure; a switch connected to the interface; a generator that includes a controller which controls operation of the generator and provides commands to the switch to selectively activate the interface to permit testing of the power switching device upon operation of the interface.
 10. The power management system of claim 9, further comprising a display that provides information relating to whether the interface is activated by the switch.
 11. The power management system of claim 10, wherein the display is positioned near the interface.
 12. The power management system of claim 10, wherein the display is positioned near the controller.
 13. The power management system of claim 9, wherein the interface includes a push button such that operation of the push button permits testing of the power switching device when the switch selectively activates the push button.
 14. The power management system of claim 9, wherein the interface includes a touch screen such that operation of the touch screen permits testing of the power switching device when the switch selectively activates the touch screen.
 15. The power management system of claim 9, wherein the power switching device is a relay.
 16. The power management system of claim 9, further comprising a plurality of power switching devices within the enclosure, wherein the switch is connected to the interface such that the switch selectively activates the interface to permit testing of the plurality of power switching devices upon operation of the interface.
 17. The power management system of claim 16, wherein the switch selectively activates the interface to permit sequential testing of each power switching device upon operation of the interface.
 18. The load control module of claim 9, further comprising a switch control that selectively activates the switch, wherein the switch control is within the enclosure.
 19. The load control module of claim 9, wherein the generator controller selectively activates the switch. 